Roll-film holder



' June 26, 1923. 1,459,914

' J. A. KNORR ROLL FILM HOLDER Filed June 1921 ATTORNEYS a a de 26,1923.

JOHN A. KNORR, 0F BAYONNE, JERSEY.

ROLL-FILM HOLDER.

Application filed June 8,

To all whom it may concern:

Be it known that L'JOHNA. KNORR, a citizen of the United States, and aresident of Bayonne, in the county of Hudson and State of New Jersey,have invented a new and Improved Roll-Film Holder, of which thefollowing is a full, clear, and exact description.

This invention relates to roll film holders and has for an object toprovide an improved, simplified construction which may be used once andthen thrown away.

Another object of the invention is to provide a film holder for movingpicture cameras which may be readily attached when in use and act asmeans for supplying unexposed film or as a reel for receiving exposedfilm.

A further object of the invention is to provide a film holder providedwith a barrel or hub structure acting in the double capacity of a reelmember on which the film is to be wound and a clutch for interlockingwith driving mechanism.

In the accompanying drawing-- Figure 1 is a side view of a film holderdisclosing one embodiment of the invention, the same being shown withone side removed.

Figure 2 is a side view of the structure shown in Figure 1.

Figure 3 is a sectional view through Figure 1 on line 33.

Figure 4 is a detail fragmentary sectional view through Figure 3 on line44. I

Figure 5 is an edge view of the structure shown in Figure 3.

Referring to the accompanying drawing by numerals, 1 indicates a tubularbody provided with ,a rear side 2 and a front side 3, said sides havingoverlapping annular flanges 4 and 5 which snugly fit against the outersurface of the tubular casing 1. If desired, these flanges could besoldered or otherwise rigidly secured to the tubular, member 1, thoughordinarily the flange 5 is not secured. The side 2 is preferably solidthroughout while side 3 is provided with a centrai aperture throughwhich the tubular member 6 projects, said tubular member havl a flange 7fitting against a felt Washer 8. Tubular member 6 snugly fits a secondtubular member 9 provided with a flange 10 arranged interiorly of theside 3. By reason of the flanges 7 and 10- and the washer 8, a rotatablestructure is 1921. Serial in. 475,952.

provided and one which will not admit light while thejriction betweenthe tubular members 6 and 9 is such that Whenever tubular member 6 isrotated, tubular member 9 will also be rotated and will act as a windingdrum for winding film thereon, said film being secured to this tubularmember in any desired manner.

When the film'holder is used as a reel for receiving exposed film, thespring clutch 11 is forced into the tubular member 6 and expands againstsaid tubular member so that whenever the shaft 12, rigidly secured tothe clutch 11, is rotated, tubul member 6 and parts associated therewiwill also be rotated. The shaft 12 is driven by any suitable means, asfor instance, a pulley 13 which in turn is driven by a belt 14. Thesprin clutch 11 is very important as it readi y slips when aconsiderable quantity of film has been wound on the tubular member 9 butwill always provide sufficient grin to secure a proper winding action.It will, of course, be understood that the belt 1-1 is operated by themoving picture camera at a proportionate speed to the speed of thecamera so that the tube 9 will properly take up the film as it passesthrough the camera.

In order that the film may be'properly.

passed into or out of the tubular member 1, a special arrangement isprovided as shown in Figures 1 and 5. This arrangement consists inhaving part of the tubular member 1 bent back upon itself for formingthe gripping jaws 15 and 16, which gripping jaws grip felt members 17and 18. said felt members fitting rather tightly together by reason ofthe spring action of the jaws 15 and 16, which spring action not onlyholds the felt members in close contact but also yields whenevernecessary as the film is moved between said felt members. The flanges 4and 5 of the sides are bent so as to present upstandingend sections 19and 20, which sections have side portions 21 bent around the jaws'15 and16 whereby the entrance of ii ht is positively prevented. The term filmas been used but it will be understood that an ordinary film may be usedor a roll of 'sensitized paper without spirit of the invention.

What I claim is 1. A film holder comprising a tubular casing having anopening and a reel extend ing from one end of the casing to the other.said casing being bent abjacent the openin side members being formedwith portions overlapping the respective ends of said jaws. 2. A rollfilm holder comprising a tubular body having an opening, said body atthe opening being bent upon itself to form resilient gripping jaws, apair of flanged side members on said body, said side members havingportions extending across the ends of said jaws and a hub memberextending through one of saidside members for revolubly supporting thefilm holder, said hub member and said side member being removable fromthe film holder in one unit,

3. A film holder comprising a tubular casing having an opening in theperiphery. said tubular casing at the opening being formed with a pairof resilient jaws pressing against each other, and a pair of flangedside members for closing the ends of said tubular easing, said flangesof said side members being slotted adjacent the resilientjaws andprovided with members adapted to overlap the ends of "said openings atthe sides to H prevent leakage of light.

4. A roll film holder comprising a tubular body havinga slot in itsperiphery, the edges of said slot being bent outwardly and then inwardlyupon itself to form a pair of jaws, said jaws being adapted to pressagainst each other, a piece of felt for each jaw to prevent admission oflight in the holder. 9. side member at each end of the tubular body andeach formed with a projection extending beyond the periphery of thetubular bod and adapted to lie adjacent the ends of sai jaws, saidprojections at the sides being formed with lateral members adapted tooverlap a portion of the outer surface of the jaws whereby to preventlight entering into the holder from the ends of the jaws.

' JOHN A. KNORR.

